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graphics: Rename shareableImages -> mipmap

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This commit is contained in:
Hajime Hoshi 2018-10-25 02:05:25 +09:00
parent 022c40aa17
commit 15cad6ed9a
2 changed files with 43 additions and 47 deletions
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2
graphicscontext.go
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@ -152,7 +152,7 @@ func (c *graphicsContext) needsRestoring() (bool, error) {
if web.IsBrowser() {
return c.invalidated, nil
}
return c.offscreen.shareableImages.level(0).IsInvalidated()
return c.offscreen.mipmap.level(0).IsInvalidated()
}
func (c *graphicsContext) restoreIfNeeded() error {

88
image.go
View File

@ -35,65 +35,61 @@ func init() {
emptyImage, _ = NewImage(16, 16, FilterDefault)
}
type shareableImages struct {
type mipmap struct {
imgs []*shareable.Image
}
func newShareableImages(s *shareable.Image) *shareableImages {
return &shareableImages{
func newMipmap(s *shareable.Image) *mipmap {
return &mipmap{
imgs: []*shareable.Image{s},
}
}
func (s *shareableImages) level(i int) *shareable.Image {
w, h := s.imgs[len(s.imgs) - 1].Size()
for len(s.imgs) < i+1 {
lastl := len(s.imgs) - 1
src := s.imgs[lastl]
func (m *mipmap) level(i int) *shareable.Image {
w, h := m.imgs[len(m.imgs) - 1].Size()
for len(m.imgs) < i+1 {
lastl := len(m.imgs) - 1
src := m.imgs[lastl]
w2 := w / 2
h2 := h / 2
if w2 == 0 || h2 == 0 {
return nil
}
var sh *shareable.Image
if s.imgs[0].IsVolatile() {
sh = shareable.NewVolatileImage(w2, h2)
var s *shareable.Image
if m.imgs[0].IsVolatile() {
s = shareable.NewVolatileImage(w2, h2)
} else {
sh = shareable.NewImage(w2, h2)
s = shareable.NewImage(w2, h2)
}
vs := src.QuadVertices(0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
is := graphicsutil.QuadIndices()
sh.DrawImage(src, vs, is, nil, opengl.CompositeModeCopy, graphics.FilterLinear)
s.imgs = append(s.imgs, sh)
s.DrawImage(src, vs, is, nil, opengl.CompositeModeCopy, graphics.FilterLinear)
m.imgs = append(m.imgs, s)
w = w2
h = h2
}
if len(s.imgs) <= i {
if len(m.imgs) <= i {
return nil
}
return s.imgs[i]
return m.imgs[i]
}
func (s *shareableImages) len() int {
return len(s.imgs)
func (m *mipmap) isDisposed() bool {
return len(m.imgs) == 0
}
func (s *shareableImages) isDisposed() bool {
return len(s.imgs) == 0
}
func (s *shareableImages) dispose() {
for _, img := range s.imgs {
func (m *mipmap) dispose() {
for _, img := range m.imgs {
img.Dispose()
}
s.imgs = nil
m.imgs = nil
}
func (s *shareableImages) disposeMipmaps() {
for i := 1; i < len(s.imgs); i++ {
s.imgs[i].Dispose()
func (m *mipmap) disposeMipmaps() {
for i := 1; i < len(m.imgs); i++ {
m.imgs[i].Dispose()
}
s.imgs = s.imgs[:1]
m.imgs = m.imgs[:1]
}
// Image represents a rectangle set of pixels.
@ -106,9 +102,9 @@ type Image struct {
// See strings.Builder for similar examples.
addr *Image
// shareableImages is a set of shareable.Image sorted by the order of mipmap level.
// mipmap is a set of shareable.Image sorted by the order of mipmap level.
// The level 0 image is a regular image and higher-level images are used for mipmap.
shareableImages *shareableImages
mipmap *mipmap
filter Filter
}
@ -121,11 +117,11 @@ func (i *Image) copyCheck() {
// Size returns the size of the image.
func (i *Image) Size() (width, height int) {
return i.shareableImages.level(0).Size()
return i.mipmap.level(0).Size()
}
func (i *Image) isDisposed() bool {
return i.shareableImages.isDisposed()
return i.mipmap.isDisposed()
}
// Clear resets the pixels of the image into 0.
@ -159,7 +155,7 @@ func (i *Image) Fill(clr color.Color) error {
func (i *Image) fill(r, g, b, a uint8) {
if r == 0 && g == 0 && b == 0 && a == 0 {
i.shareableImages.level(0).ReplacePixels(nil)
i.mipmap.level(0).ReplacePixels(nil)
i.disposeMipmaps()
return
}
@ -200,7 +196,7 @@ func (i *Image) disposeMipmaps() {
if i.isDisposed() {
panic("not reached")
}
i.shareableImages.disposeMipmaps()
i.mipmap.disposeMipmaps()
}
// DrawImage draws the given image on the image i.
@ -351,7 +347,7 @@ func (i *Image) drawImage(img *Image, options *DrawImageOptions) {
sy1 = sy1 / s
}
if src := img.shareableImages.level(level); src != nil {
if src := img.mipmap.level(level); src != nil {
colorm := options.ColorM.impl
cr, cg, cb, ca := float32(1), float32(1), float32(1), float32(1)
if colorm.ScaleOnly() {
@ -367,7 +363,7 @@ func (i *Image) drawImage(img *Image, options *DrawImageOptions) {
if colorm.ScaleOnly() {
colorm = nil
}
i.shareableImages.level(0).DrawImage(src, vs, is, colorm, mode, filter)
i.mipmap.level(0).DrawImage(src, vs, is, colorm, mode, filter)
}
i.disposeMipmaps()
}
@ -443,11 +439,11 @@ func (i *Image) DrawTriangles(vertices []Vertex, indices []uint16, img *Image, o
}
vs := []float32{}
src := img.shareableImages.level(0)
src := img.mipmap.level(0)
for _, v := range vertices {
vs = append(vs, src.Vertex(float32(v.DstX), float32(v.DstY), v.SrcX, v.SrcY, v.ColorR, v.ColorG, v.ColorB, v.ColorA)...)
}
i.shareableImages.level(0).DrawImage(img.shareableImages.level(0), vs, indices, options.ColorM.impl, mode, filter)
i.mipmap.level(0).DrawImage(img.mipmap.level(0), vs, indices, options.ColorM.impl, mode, filter)
}
// Bounds returns the bounds of the image.
@ -475,7 +471,7 @@ func (i *Image) At(x, y int) color.Color {
if i.isDisposed() {
return color.RGBA{}
}
return i.shareableImages.level(0).At(x, y)
return i.mipmap.level(0).At(x, y)
}
// Dispose disposes the image data. After disposing, most of image functions do nothing and returns meaningless values.
@ -490,7 +486,7 @@ func (i *Image) Dispose() error {
if i.isDisposed() {
return nil
}
i.shareableImages.dispose()
i.mipmap.dispose()
runtime.SetFinalizer(i, nil)
return nil
}
@ -511,7 +507,7 @@ func (i *Image) ReplacePixels(p []byte) error {
if i.isDisposed() {
return nil
}
i.shareableImages.level(0).ReplacePixels(p)
i.mipmap.level(0).ReplacePixels(p)
i.disposeMipmaps()
return nil
}
@ -576,7 +572,7 @@ type DrawImageOptions struct {
func NewImage(width, height int, filter Filter) (*Image, error) {
s := shareable.NewImage(width, height)
i := &Image{
shareableImages: newShareableImages(s),
mipmap: newMipmap(s),
filter: filter,
}
i.addr = i
@ -599,7 +595,7 @@ func NewImage(width, height int, filter Filter) (*Image, error) {
// If width or height is less than 1 or more than device-dependent maximum size, newVolatileImage panics.
func newVolatileImage(width, height int) *Image {
i := &Image{
shareableImages: newShareableImages(shareable.NewVolatileImage(width, height)),
mipmap: newMipmap(shareable.NewVolatileImage(width, height)),
}
i.addr = i
runtime.SetFinalizer(i, (*Image).Dispose)
@ -621,7 +617,7 @@ func NewImageFromImage(source image.Image, filter Filter) (*Image, error) {
s := shareable.NewImage(width, height)
i := &Image{
shareableImages: newShareableImages(s),
mipmap: newMipmap(s),
filter: filter,
}
i.addr = i
@ -633,7 +629,7 @@ func NewImageFromImage(source image.Image, filter Filter) (*Image, error) {
func newImageWithScreenFramebuffer(width, height int) *Image {
i := &Image{
shareableImages: newShareableImages(shareable.NewScreenFramebufferImage(width, height)),
mipmap: newMipmap(shareable.NewScreenFramebufferImage(width, height)),
filter: FilterDefault,
}
i.addr = i